Balance the equation As4O6 + MnO4 = AsO4 + Mn
By manipulation and also common sense and using the algebraic method ,Do the manipulation and use common sense .
Label each compound
(a)As4O6 + (b)MnO4 = (c)AsO4 + (d)Mn
Create a System of Equations
Create an equation for each element (As, O, Mn) where each term represents the number of atoms of the element in each reactant or product.
As: 4a + 0b = 1c + 0d
O: 6a + 4b = 4c + 0d
Mn: 0a + 1b = 0c + 1d
Solve For All Variables
Use substitution, gauss elimination, or a calculator to solve for each variable.
Using Substitution or Elimination
Simplify the result to get the lowest, whole integer values.
a = 2 (As4O6)
b = 5 (MnO4)
c = 8 (AsO4)
d = 5 (Mn)
Substitute Coefficients and Verify Result
2As4O6 + 5MnO4 = 8AsO4 + 5Mn
L R
As 8 8 ✔️
O 32 32 ✔️
Mn 5 5 ✔️
Since there is an equal number of each element in the reactants and products of 2As4O6 + 5MnO4 = 8AsO4 + 5Mn, the equation is balance
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how many atoms are there in 6.2 grams of silver
how long does vacuum sealed raw meat last in the freezer?
Answer:
Frozen Meats – Frozen raw meats that are properly vacuum sealed can be stored in the freezer from 1-3 years depending on the type of meat. However, raw meat that is not vacuum sealed will only last 1-12 months depending on the meat.
Explanation:
hop this helps
Answer: Six months or three years
Explanation: Frozen meats, poultry, and fish can last in the freezer for up to six months and when they are vacuum sealed, frozen meats can stay fresh and free from freezer burn for up to 3 years.
Why does an ice cube melt when you hold it in your hand?
A. Heat is transferred from your hand to the ice cube.
B. The ice cube radiates heat to your hand.
C. Heat from the ice cube is transferred to your hand.
D. Your hand transfers temperature to the ice cube.
Answer:
I believe it's letter A.
An ice cube melting in a hand is an example of convection as heat is transferred from your hand to the ice cube.
What is convection?Convection can be "forced" by movement of a fluid by means other than buoyancy forces (for example, a water pump in an automobile engine). Thermal expansion of fluids may also force convection. In other cases, natural buoyancy forces alone are entirely responsible for fluid motion when the fluid is heated, and this process is called "natural convection". An example is the draft in a chimney or around any fire. In natural convection, an increase in temperature produces a reduction in density, which in turn causes fluid motion due to pressures and forces when fluids of different densities are affected by gravity (or any g-force).
For example, when water is heated on a stove, hot water from the bottom of the pan is displaced (or forced up) by the colder denser liquid, which falls. After heating has stopped, mixing and conduction from this natural convection eventually result in a nearly homogeneous density, and even temperature. Without the presence of gravity (or conditions that cause a g-force of any type), natural convection does not occur, and only forced-convection modes operate.
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What occurs to a sound wave as it passes from air into a vacuum?
Answer:
Sound waves cannot propagate in vacuum. Air is needed for sound waves to travel and there is no air in vacuum.
Explanation:
Two different students on two different days determine the density of urine using the exact same urine sample and lab equipment. they come up with two different values of the density yet both are correct. how might this be possible?
The variation in the density values obtained by two different students could be due to experimental error, inherent measurement uncertainties, or differences in technique or procedure.
When measuring the density of a substance, there are various factors that can introduce variability in the results. The density is typically determined by dividing the mass of the substance by its volume. In this case, both students used the same urine sample and lab equipment, which eliminates any differences related to the sample or the instruments used.
However, there are still several sources of potential error. First, there may be slight differences in the handling and preparation of the urine sample between the two students. Small variations in temperature, contamination, or evaporation can affect the density measurement.
Secondly, the measurement process itself involves inherent uncertainties. The precision of the measuring instruments, such as the balance and the volumetric apparatus, can introduce slight variations in the obtained values. Additionally, reading errors or parallax when reading the instruments can also contribute to differences in the results.
Lastly, the students' individual techniques and approaches to measuring the density may differ slightly. Factors such as how they handle the equipment, how they record measurements, or how they account for experimental conditions can all influence the final density value.
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please help my chemistry homework thank you so muchThe specific heat of gaseous krypton, c = 0.248 J/g°C.
Answer
-52.2 Joules
Explanation
Given that;
Mass of krypton, m = 12.3 g
Temperature change, ΔT = 22.2°C - 39.3°C = -17.1°C
The specific heat of gaseous krypton, c = 0.248 J/g°C.
What to find:
The energy change, Q.
Step-by-step solution:
The energy change, Q can be determined using:
Q = mcΔT
Putting the values of the given parameters into the formula, this yields:
\(\begin{gathered} Q=12.3g\times0.248J\text{/}g°C\times-17.1°C \\ \\ Q=-52.2\text{ }J \end{gathered}\)Therefore the energy change = -52.2 Joules
lactate and pyruvate are byproducts of group of answer choices anaerobic glycolysis aerobic glycolysis anaerobic oxidation of fats creatine
Lactate and pyruvate are byproducts of anaerobic glycolysis. Anaerobic glycolysis is the metabolic process of breaking down glucose into energy when oxygen is not available.
During anaerobic glycolysis, glucose is broken down into pyruvate in the absence of oxygen, which is then converted into lactate as a means of regenerating NAD⁺ so that glycolysis can continue. This process is commonly used by muscle cells during intense exercise when oxygen delivery cannot keep up with the energy demand. In contrast, during aerobic glycolysis, glucose is broken down into pyruvate in the presence of oxygen, which then enters the mitochondria to be further metabolized in the citric acid cycle.
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100 POINTS WILL MARK BRAINLIEST PICTURE BELOW
Answer:
D
Explanation:
it seems the most logical
Answer:
B
Explanation:
6.00 ml
PLEASE MARK AS BRAINLIEST
given just a chemical equation for an oxidation-reduction reaction, in general how can you determine which compound is oxidized and which compound is reduced?
The process by which an atom or ion loses one or more electrons is known as oxidation, while the process by which an atom or ion gains one or more electrons is known as reduction.
The chemical processes in which electrons are transferred from one chemical to another. Redox reactions, also known as oxidation-reduction reactions, are the name given to these electron-transfer processes. The addition of oxygen or hydrogen to various compounds is another step in the oxidation and reduction reactions.
During oxidation processes,
1. Oxygen addition: C + O2 CO2 (oxidation of carbon)
2. Adding an electronegative element result in FeS (Fe + S) (oxidation of Iron)
3. Hydrogen removal: Br2 + H2S = 2 HBr + S (oxidation of sulphide)
4. Elimination of electropositive elements: I2 + 2 KOH + 2 KI + H2O (oxidation of iodide)
An oxidizing agent is something that causes oxidation. O2, S, Cl2, Br2, and H2O2 are oxidizing agents in the examples above.
Reduction responses include:
1. Hydrogen addition: N2 + 3 H2 2NH3 (reduction of nitrogen)
2. Electropositive element addition results in SnCl2 + 2HgCl2 becoming SnCl4 + Hg2Cl2 ( reduction of mercuric chloride)
3. Oxygen removal ZnO + C Zn + CO (reduction of zinc oxide)
4. Electronegative element removal using 2FeCl3 + H2 2FeCl2 + 2HCl (reduction of ferric chloride)
A substance that causes reduction is known as a reducing agent. HgCl2, C, and H2 are the reducing agents in the aforementioned cases.
A substance that goes through oxidation serves as a reducing agent, whereas a substance that goes through reduction serves as an oxidizing agent.
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of the following, which gives the correct order for atomic radius for mg, na, p, si and ar?
The proper order is Na > Mg > Si > P > Ar. As a result of the valence electrons' low nucleostatic attraction, sodium (Na) has the biggest atomic radius.
The electrons' orbitals get bigger and bigger as we go from top to bottom, increasing the atomic size.S and Ar are hence real. S is the largest element on the periodic table since it is on the left. Na has the most atoms of any of the other elements mentioned. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. The atomic radius grows in a group from top to bottom and decreases across a period, as seen in the figures below. The smallest element is therefore helium, whereas the largest is francium.
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Which solution will have the greatest boiling point? Remember ionic > covalent AND more ions > less ions
a) 0.5 M C₁₁H₂₂O₁₁
b) 1 M NaCl
c) 0.5 M NaCl
d) 1 M C₁₁H₂₂O₁₁
b) 1 M NaCl will have the highest boiling point because it has the highest number of solute particles present.
When comparing the boiling points of various solutions, the number of solute particles present in the solution is the most important consideration. Ionic substances tend to have higher boiling points than covalent substances since they contain strong electrostatic forces between the ions.
To determine which of the given solutions has the highest boiling point, we must first consider the number of solute particles present in each of the given solutions.
a) 0.5 M C₁₁H₂₂O₁₁C₁₁H₂₂O₁₁ is a covalent substance that does not ionize in water. Thus, only one molecule of C₁₁H₂₂O₁₁ is present in the solution. As a result, it has the lowest boiling point
.b) 1 M NaClNaCl is an ionic compound, which breaks down into two ions in water: Na+ and Cl-. There are twice as many solute particles in the solution as there are in the 0.5 M C₁₁H₂₂O₁₁ solution. As a result, NaCl has a higher boiling point than 0.5 M C₁₁H₂₂O₁₁.
c) 0.5 M NaCl0.5 M NaCl contains the same number of solute particles as 1 M NaCl. As a result, both solutions have the same boiling point.
d) 1 M C₁₁H₂₂O₁₁C₁₁H₂₂O₁₁ is a covalent substance that does not ionize in water. Thus, only one molecule of C₁₁H₂₂O₁₁ is present in the solution.
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is it possible for an atom to make more than one bond? explain and give an example.
Answer:
yes
Explanation:
you can have a double bond, i dont know how to explain it just one of those types of questions
which of the following characteristics identifies a ph-balanced shampoo
The pH scale ranges from 0 to 14, with values below 7 considered acidic, 7 being neutral, and values above 7 being alkaline. Hair and scalp have a slightly acidic pH, and using a pH-balanced shampoo helps maintain the natural balance.
The characteristic that identifies a pH-balanced shampoo is having a pH level close to the natural pH level of the hair and scalp, which is around 4.5 to 5.5. Therefore, a pH-balanced shampoo will have a pH level in the acidic to neutral range, typically between 4.5 and 5.5, to avoid causing damage or disrupting the natural pH balance of the hair and scalp.
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A pH-balanced shampoo should have a pH between 4.5 and 5.5, contain mild acids or bases, and help to keep the hair and scalp's natural pH level balanced.
Explanation:Characteristics of a pH-balanced shampoo:pH is between 4.5 and 5.5Contains mild acids or bases to maintain the desired pH level Helps to keep the hair and scalp's natural pH level balancedA pH-balanced shampoo is important because it prevents the scalp from becoming too dry or too oily. It ensures that the hair cuticle is closed, reducing frizz and improving shine. Using a pH-balanced shampoo can also help maintain the effectiveness of other hair products.
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in question 3, you were asked the difference between calcium nitride and calcium nitrate. now write the formula for each of them.
The formulas for calcium nitride and calcium nitrate:
Calcium nitride: Ca₃N₂ is the chemical formula for calcium nitride. The subscript 3 is placed in front of Ca because it consists of one calcium atom (Ca) linked with three nitrogen atoms (N). The substance is an ionic compound in which nitrogen has a charge of -3 and calcium has a charge of +2 (Ca₂+) (N₃-).
Calcium Nitrate: Calcium nitrate's chemical formula is Ca(NO₃)₂. One calcium atom (Ca) is joined to two nitrate ions in this structure (NO₃-). The nitrate ion has a -1 charge and is made up of one nitrogen atom (N) joined to three oxygen atoms (O).
The calcium ion (Ca₂+) joins with two nitrate ions (NO₃-) to form calcium nitrate, a molecule that is neutral and has a balanced charge.
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Which of the following elements has the same number of valence electrons as aluminum?
zinc
carbon
silicon
magnesium
or boron
Answer:
boron
Explanation:
Boron and aluminum lie in same group in modern periodic table and both have three valence electrons
In the SI system of units, the mole is one of seven base units. It is frequently used in
chemical calculations. However, a mole of something is just a particular quantity of it. It
is not a unit of measure in the way that meters, seconds, and kilograms are.
Calculations performed with the number of moles of a substance could also be
performed with the number of particles of a substance. Based on this information, do
you think that the mole should be considered a base unit in the SI system? Explain why
or why not.
Answer:
Whyyy
Explanation:
The mole should be considered a base unit in the SI system because it is widely used in chemical calculations as a standard unit for counting the number of particles in a substance. The mole allows for easy and accurate calculation of the amount of substance, which is a crucial aspect in many chemical processes. In addition, the mole is defined as the number of entities in a substance, such as atoms, molecules, or ions, and its definition is based on Avogadro's constant. The mole also has practical applications in fields such as pharmacology and environmental science, where the measurement of a specific quantity of a substance is essential.
In conclusion, the mole is a necessary unit for the SI system of units due to its widespread use in chemical calculations and its important role in accurately measuring the amount of substance in a variety of scientific disciplines.
Which of the following reactions is NOT properly classified?
Answer:
I got B a little while back, but the answer might be different for you
sorry if i am wrong
Explanation:
The chemical equation which is not properly classified is CO₂ + 2 H₂O\(\rightarrow\) CH₄ + 2 O₂ as this is not combustion reaction.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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Key computer issues addressed by the bureau of consumer protection (bcp) include all of the following except _____
All of the following are significant computer-related concerns that the Bureau of Consumer Protection (BCP) addresses, with the exception of how to increase the number of "cookies".
What is a consumer ?
Consumers are those who buy products for their own needs and utilise or consume them.
Product liability, privacy rights, unfair business practises, fraud, misrepresentation, and other consumer/company interactions are only a few of the many themes covered by consumer protection. Although a customer cannot resell the good, product, or service, he or she may use it to support himself or herself and engage in self-employment.
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Calculate the percent ionization of an aqueous solution containing 0.13 m formic acid, hco2h(aq), and 0.11 m potassium formate, hco2k(aq). for formic acid, ka = 1.8
The percent ionization of formic acid increases by 38.46% when potassium formate is added to the solution.
Here is the calculation of the percent ionization of an aqueous solution containing 0.13 M formic acid, HCOOH(aq), and 0.11 M potassium formate, HCOOK(aq). For formic acid, Ka = 1.8:
Initial concentrations:
HCOOH = 0.13 M
HCOOK = 0.11 M
Equilibrium concentrations:
HCOOH = 0.13 - x M
HCOOK = 0.11 + x M
H+ = x M
HCOO- = x M
Where x is the amount of formic acid that ionizes.
Ka = [H+][HCOO-] / [HCOOH]
1.8 = x^2 / 0.13 - x
x^2 + 2.34x - 2.34 = 0
(x + 4.68)(x - 0.5) = 0
x = 0.5
Therefore, the percent ionization of the formic acid solution is:
percent ionization = (x / [HCOOH]) * 100% = (0.5 / 0.13) * 100% = 38.46%
The presence of potassium formate in the solution increases the percent ionization of formic acid because potassium formate is a base. Bases react with acids to form water and a salt. In this case, potassium formate reacts with formic acid to form potassium hydrogen formate and water. This reaction removes some of the formic acid from the solution, which increases the concentration of the hydrogen ions and the percent ionization of the formic acid solution.
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Scientific knowledge can withstand the test of time because
A.
scientific theories have been proven beyond doubt.
B.
it is open to change as new evidence or data is discovered.
C.
advancements in technology have no impact on science.
D.
exceptions can be made regarding scientific laws.
Answer: Its B for the Study Island assignment
Explanation:
A customer is traveling to a branch office static ip.
Answer:
A customer is travelling to a branch office, and the network administrator provides her with a static IP address for her laptop
Explanation:
I hope this helps!!!...
Brainliest please???
A container holds 0.500 qt if liquid. how many mL of lemonade will it hold
if loratadine and pseudoephedrine sulfate are put into a LLE system. what would be the best organic phases and aqueous phase to separate them?
In a liquid-liquid extraction (LLE) system with loratadine and pseudoephedrine sulfate, the choice of organic and aqueous phases is crucial for efficient separation.
Loratadine is a non-polar compound, while pseudoephedrine sulfate is more polar due to the presence of a sulfate group. To achieve effective separation, we need to choose a suitable organic phase and aqueous phase.
For the organic phase, a non-polar solvent such as diethyl ether, ethyl acetate, or chloroform can be used. These solvents have good solubility for loratadine. The non-polar organic phase will extract loratadine from the mixture, allowing for separation from the aqueous phase.
As for the aqueous phase, we need to choose a polar solvent that will selectively extract pseudoephedrine sulfate. Aqueous solutions of acids like hydrochloric acid (HCl) or sulfuric acid (H2SO4) can be used. The acidic conditions protonate the pseudoephedrine sulfate, making it more soluble in the aqueous phase.
To perform the extraction, the mixture of loratadine and pseudoephedrine sulfate is added to the LLE system consisting of the organic phase (non-polar solvent) and the aqueous phase (acidic solution). The mixture is then vigorously shaken to ensure thorough mixing and extraction.
After shaking, the phases are allowed to separate, with the more dense aqueous phase settling at the bottom and the less dense organic phase on top. The layers can be carefully separated, and each phase can be further processed to isolate the desired compounds.
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20
. If the number of neutrons in the nucleus of the atom is 30, and the atomic number is 40, what is the mass number of that atom?
Answer:
70
Explanation:
The atomic number stands for the number of protons.
mass number stands for number of neutrons and protons.
30 neutrons + 40 protons = mass number of 70
Hope this helps!
Can someone please help me finish this all?
I will give brainliest and a heart to the best answer!
Answer:2-liver because it doesnt belong to digestive system
3-esophagus because it doesnt belong to the circulatory system
4-heart because it doesnt belong to the nervous system
5-skull because it doesnt belong to the endocrine system
Explanation:
Jose and Sue were investigating the formation of precipitates in chemistry lab. They
mixed a silver nitrate solution with a sodium chloride solution and immediately a
white solid appeared in the bottom of the test tube. This white solid is a precipitate
of silver chloride. The reaction is represented with the equation:
AgNO3(aq) + NaCl (aq) → AgCl (s) + NaNO3(aq)
The given reaction of silver nitrate with sodium chloride is an example of double displacement reaction where, two groups replaces each other. Thus, option D is correct.
What is double displacement reaction?Displacement reaction is a type of reaction in which a species from a reactant is displaced by other species or group from reagent. There are single displacement reaction as well as double displacement reaction.
In single displacement reaction, only one group is displaced by another group from the second reactant. Whereas in double displacement reaction, two groups are displaced each other between two reactants.
In the reaction between silver nitrate and sodium chloride, the nitrate group and chloride group interchange between the metals silver and sodium as written in the reaction. Hence, it is a double displacement reaction.
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Your question is incomplete, but your complete question probably was:
Jose and Sue were investigating the formation of precipitates in chemistry lab. They
mixed a silver nitrate solution with a sodium chloride solution and immediately a
white solid appeared in the bottom of the test tube. This white solid is a precipitate
of silver chloride. The reaction is represented with the equation:
AgNO3(aq) + NaCl (aq) → AgCl (s) + NaNO3(aq)
The equation represents a ________________ reaction.
A) synthesis
B) decomposition
C) neutralization
D) double replacement
Which molecule is polar?
A. CO2
B. PF3
C. CH4
D. BF3
The MSDS for chloroform indicates that it is a clear liquid that has a pleasant smell and substantial vapor pressure. People should avoid inhaling its vapors, and it is sensitive to light. Malik needs 10 mls of chloroform for an experiment. According to this information, how should he safely pour the chloroform?
A.He should locate the chloroform stored in a transparent container in chemical storage and pour directly into his beaker from that location.
B.He should locate the chloroform stored in a transparent container in chemical storage and should take it to the fume hood to pour.
C.He should locate the chloroform stored in a dark container in chemical storage and should take it to the fume hood to pour.
D.He should locate the chloroform stored in a dark container in chemical storage and pour directly into his beaker from that location.
Answer:C.He should locate the chloroform stored in a dark container in chemical storage and should take it to the fume hood to pour.
Explanation:
The statement of the question clearly states that chloroform is sensitive to light and it's vapour is toxic.
If a substance is sensitive to light, then it must be stored in a dark bottle. This is because. If a substance that is sensitive to light is stored in a transparent container, it may be decomposed by light.
Being a substance whose fumes are toxic, Malik should pour the liquid in a fumes hood so that he does not inhale the fumes.
How many grams of oxygen are required to burn 13.50 grams of acetylene?
Which of the following statements is NOT true about Olympus Mons?
It is 3 times as high as Mount Everest.
O Its base is about the same size as Arizona.
It is the largest mountain in the solar system.
It have never erupted.
Answer:
The largest of the volcanoes in the Tharsis Montes region, as well as all known volcanoes in the solar system, is Olympus Mons. Olympus Mons is a shield volcano 624 km (374 mi) in diameter (approximately the same size as the state of Arizona), 25 km (16 mi) high, and is rimmed by a 6 km (4 mi) high scarp.
Explanation: